Double-walled vacuum-insulated vessel.



E. L. GREENEWALD. DOUBLE wALLEn'vAcuuM LNsuLATED VESSEL.

Patented Aug, 2L, 1917.

yi! Ilfal APPLICATION man MAR. zr. 19:4.

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- wALD, a citizen of the United States, 'andf resident of Washington, in the District of Columbia, have invented, certain newandv sTATEs rnrnn'r oEEIcE.

` EUGENE I.. GREENEWALD, or wAsEINGToN, DISTRICT or COLUMBIA DOUBLE-WALLED vacuum-INSULATED vEssEL.

To all whom, t may concern: p

Be it known that I, EUGENE L. GREENE- useful Improvements in Double-Walled Vacuum-Insulated Vessels, of which the following is a specification.

My invention relates to improvements in double-walled Vacuum insulated containers and more particularly to that ty e of vessel generally known as vacuum bott es.

One of the objects of my invention is to improve the construction of the double vacuum bottles disclosed in the applicationof Charles F. P. Anders, Serial No. 814,236, matured into Patent No. 1,172,248, by providing two parallel, upright receptacles inclosed by a single wall, which wall is united to the receptacles at their mouths and separated from the bodies of the receptacles by a vacuum space. yBy such an arrangement the separate contents of the two receptacles -inclosed b/y/ the single wall may be kept at the same or diercnt temperatures for con.

This construcsiderable periods of time. tion has mostof the advantages of two separate insulated containers with but a slight increased expense in manufacturing over a single vacuum bottle.

Another object of the invention is to rein-- force the joint at the mouth of the receptacle member where it is united to the wall so that, if desired, `the means usually employed for spacing the receptacle member from its wall may be omitted.

Another object is to provide simple and Veffective devices for yieldingly supporting connection with the drawing, Ain which- Figure'l is a View. partly in section and Specification of Letter-ardent. Application filed March 27, 1914.. Serial No. 828,067.

Patented Aug. 21, 191 i7.

partly in side elevation illustrating the outer'y Wall andv one ofthe receptaclestted therein andsecured thereto before the wall is bent; u Flg. 2 is a central vertical sectional view illustrating the bottle when the same is inished and showing in dotted lines the inclos- I ing casing therefor; l

Flg. 3 1s a vertlcal cross sectional view of a vacuum Insulated vessel having a single receptacle and embodying features of my iul vention;

Flg. 4: is a perspective view of a device for centering and supporting the receptacle member within its inclosing wall and for insulating said receptacle 1from said wall, the parts of said device being separated;

Figs. 5, 6 and 7 are views illustrating other devices for centering, supporting and insulating the inner member vwithin the outer member; A

Figs. 8 and 9 are respectively a vertical sectional view and a cross sectional view of a portion 0f a bottle embodying a reinforcement at the neck of the inner and outer members.

.Figs 10, 11 and 12 are other sectional views of receptacles embodying my invention and showing reinforcing means which may afford a reinforced and slightly resilient Joint between the Vinner and outer bers of the bottle or container.

Referring to the drawing, Figs. land 2 in particular, 15' designates a 'tubular glass blank constituting the outer wall for the glass receptacle blanks 16 and 17 v which are attached to the wall at their mouths and .completely inclosed by the wall. The wall l15 is of substantially uniform diameter throughout except at one end where it termemminates in a reduced portion or neck 18.

rllhe receptacle members 16 and 17 have tapering bottoms 19 and 20 respectively which are shown as conical but may be i,rounded to any other desirable shape. The receptacle 16 has a narrow portion or neck 21 which fits Within and is of a size to4 bespaced from the neck 18 of the wall 15. The receptacle 16 andy wall 15 are permanently united together at their lips or ends, as at 22, by fusing or in some other suitable manner. The receptacle 16 is otherwise spaced and insulated from the wall 15. To

' at the peripheryand the supporting sections 26 between the notches 25. The plate.

23 has a centralhole 27 extendingv therethrough and a circular ring`28 of asbestos,

mica or other suitable insulatingfmaterial is superposed on the plate 23 and has a hole 29 extending therethrough and coaxial with the hole 27 in the plate 23. The disk 28 is held in place on the plate 23 and prevented from lateral movement by the upstanding lugs or projections 24, which latter may have their ends bent inwardly to permanently secure the disk 28 to plate 23. The hole 29 is 'of a smaller diameter than the hole 27 so that when the parts are fitted together the insulating disk will extend inwardly beyond the edge of the hole 27, at all points overlapping the edge of the hole 27. ln making the bottle, the receptacle 16 is telescoped, neck end first, through the wide open end 30 of the blank 15 'and so that the neck 21 and neck -18 are concentric. The member shown in Fig. 4 is then assembled vand passedinto the blank 15, the notches 25 being arranged to permit the plate to pass two rowsz31 and 32 of interior lugsor beads formed by indents on the ex-v terior of the wall 15. The projections 31 and. 32 equal the notches 25 in number and when the device. consisting of the two parts 23 and 28 hasVV passed the projections 32 it may be turned slightly so that the notches no longer register with the projections and so that the parts 26, of the plate 23 may rest on said projections 32.

D |The tapering bottom 19 extends through the openings 29 and 27 and the bottom rests i on the edge' of the hole 29 in the insulating disk, whereby the receptacle member`v is yieldingly centered and supported. in the wall 15and also completely insulated therefrom as the tapering part 19 does not come into contact with the metal plate 23.

While the receptacle is being united to the wall at itsfmouth it is being yieldingly supported and centered at its lower end. T-he yielding support has the advantage united and afterward, it will takeup an compensate for any unequal expansion between the inner and outer glass blanks thus relieving the neckl of such strains. j

After the receptacle 16 has been joined to the walll, the latter is bent at or near the section a-b to produce a U-shaped outer wall having a bent part 33 and vprovided with a Hat bottom part 34 supplying a base for supporting the container within an outer easing 35 .which is shown i'ndotted lines.` The two limbs 3G and 37 of the wall 15 are bent so that they will be'parallel and stand close together. v Y g A; resilient centering, supporting and insulating device such as the one shown in Fig. 4 and hereinbefore described is inserted into the limb 37 through the wide mouth 30 and setso that theportions 26 y ofthe plate 23 will rest on the beads 31.

hollow walled Stoppers 40, 41, are provided which it the mouths of the receptacles 16 and 17 respectively. The wall 15 may be provided with a single sealing opening 151 preferably in the bent portion as shown and the air from within the wall and from about both receptacles may `be exhausted through the single opening.

In Fig. 7 is shown another form of resilient centering, supporting Vand insulating device which comprises a disk 42 molded of asbestos or other suitable heat insulating material, being provided with a central hole 43 to receive the tapering endof the receptacle member, and Anotches 44' at' its peripheral edge to pass over the beads onthe interior of the wall as previously set forth and leaving parts '45 to fseat on the beads.

When the disk is molded or otherwise madea circular sinuous resilient metal wire 46 is completely embedded therein to, reinforce4 i the disk and also provide for the necessary resiliency toA take Careof the unequal expension of the wall 'and receptacle.

Referring to Fig. 3,1 have shown an outer wall 48 having a conical'bottom 49 provided with a sealing opening 491 and a Wide mouth through which is rst inserted a spiral spring 50 of metal, the end spiral of which may be engaged beneath holding lugs or beads 51 on the interior of the bot,- tom 49 to hold the spring centrally in place in the bottom of `the outer wall. The receptacle blank 52 is substantially similar to the outer blank 48 and the tapering end 53 tsin the spiral sprin 50 wl1ereby the receptaele may be yiel ly centered and supported while the twogblanks are being united .at their mouths. The wire spring 50 may be covered with `rnay be employed. In Fig. the end spiral of a spring wire 54 is embeddedin an asbestos disk 55 and encircles a hole 56 in said disk, the said .hole `being designed to receive and center the tapering end53 of the receptacle blank. 'I`he.\spring 54, like the spring 50 is arranged -.co-axially with both inner and outer blanks and rests on the interior of the bottom of the outer blank. In Fig. 6, I have illug another form in which a disk 57 of asbes sor like material has a hole 58 to receive and center the tapering end 53 of a receptacle and a resilient sinuous wire 59 is partly em'bedded in the disk 57 and extends throughout its under side near the circumferential edge, resting on a ledge 60 on the interior of the bottom wall 49. The above described devices yieldingly support and center the inner blank while it is being secured to the outer blank and take up strains of unequal expansion and contraction afterward whenv the container is in use. The devices also afford eifective heat insulating spacers between the inner and outer walls. v

In order to reinforce the joint between the inner and outer blanks of the vacuum bottles shown in Figs. 1, y2 and 3, I embed a suitable resilient reinforcement 6l therein which extends from the wall of the inner blank to the wall of the outer blank through the joint therebetween. As shown in Fig. 3, a series of metal wires 62 of suitable resilient non-oxidizable material are preferably embedded in the end of one of the blanks, the inner one in this instance,. and when the blanks are fused together the wires 62 are bent around and embedded into the glass at the joint 63. reinforcement which is resilient and will compensate for differences in expansion or contraction of the inner and outer receptacles at the joint and the usual spacers between the blanks may be dispensed with. In actual use and when a filled vacuum bottle is laid on lits side or receives a sudden jar the leverage of the lled receptacle part subjects the joint at the neck to an excessive strain which breaksmany bottles. The reinforcement overcomes this defect in the bottle. y

In the construction illustrated in Figs. 8 and 9, I have blank joined together by a solid neck section 651. An annular metal U-shaped plate 65 has corrugated inner and outer flanges 66 and 67 which are pressed vinto or elnbedded in the plastic glass of the solid neck portion 651 of the bottle and fused thereto. The corrugated flanges provide for resiliency in all directions, the flanges extending The wires provide a U-shaped,

shown an inner and outer into the inner and outer walls. The top portion of the plate 65 may be entirely embedded in the neck or rest on the upper edge thereof.

A bottle is illustrated 1n Fig. l0 in which the inner blank 68 has an outwardly extending flange 69 at its mouth. The flange 69 overlaps and rests on but is not united to the upper end of the outer blank 70 and a Washer of asbestos 701 may be placed therebetween. The blanks 68 and 70 are closed at their bottoms and the space therebetween, as in all bottles herein shown, has the air exhausted therefrom and a .vacuum sealed therein. It will be understood that in certainembodiments of the invention it will be v unnecessary to exhaust the air from the space between the inner and outer blanks, as for, some purposes the dead air space between the blanks provides sufficient heat insulation. In order to provide a sealed connection between the inner and outer blanks at l.the top or mouth, I make use of a metal U-slraped plate "7l of resilient material and having the inner and 7 3 provided with beads at their edges whereby the flanges are connected or fused in any suitable manner to the-glass banks 68 and 70 as at 7a and 75 providing air tight seals. 'Ihe resiliency of the flanges permits the bodily movement of the inner blank and prevents breakage due to excessive-jar.

In Fig. l1, the inner glass bottle 76 has an 'outer flange 77 at its mouth and is introduced through the bottom of the metal wall 78 which has an inwardly extending flange 79 overlapping thel flange 77. A resilient circular s inuous Wire 80 is inserted between the two flanges 77 and 79, and is fused to the glass flange 77 and welded to the metal lla-nge 79, wherebyl a resilient connection is effected between the inner and outer blanks. The Hanged bottom 81 is Welded to the outer blank 78 and has a sealing opening 82 for exhausting the air from the space between the walls. The spacer 83 of asbestos orof resilient heat insulating material may be inserted between the bottom of the receptacle 76 and the bottom 81er may be omitted if desired;

In Fig. 12, the' edge of the flange 79 has been inturned to provide a resilient roll or bead 84 which is fused or permanently connected to the flange 77 to provide a reouter flanges 72 and f silient, air-tight seal between the inner and vouter blanks.

'Referring to the construction shown in Figs. 1, 2 and 3, the outer wall of the bottleis provided with a reinforcing and protective frame consisting of aseries of resilient metal wires or bands 85 extending longitudinally of the wall and being sinuous or wavy in form and embedded in the wall at y intervals in their length leaving resilient A inclosing casing 35. kThe longitudinal Ywires l claim is:

yis substantially the 85 are joined together into the form of a frame by the circumferentially extending wires 86- which may be sinuous and embedded in the wall 15. 1t is to be understood that where. a wide-mouth member is referred to in this description or the anneXed claims l mean a member whose mouth same diameter as the body of the member, and where a narrowmouth member is referred to, a member is meant whose mouth is smaller in diameter than the body. The neck portion of a widemouth member or blank means that portion of the body near the mouth of the 'body'. or blank and the neck portion of a narrowmouth member refers to the reduced portion of the bodyv near the mouth.

While I have shown and described my invention in detail, I do not wish to be limited tothe exact construction as set forth.

Having thus described my invention, what l l. A container comprising an outer tubular wall having two upwardly extending tubular limbs communicating at the bottoms thereof, and receptacle members fitting with-y in said limbs.

2. A container comprising an outer wall in the form of a tubular body bent intermediate its ends and providing two upwardly extending limbs and a receptacle member tting within each of said limbs.

A 3. A container comprising two upright receptacle members and a single tubular casing therefor spaced substantially -a uniform distance from each vreceptacle member entirely around the same, said casing being joined to each receptacle member and inclosing both said members. y v

a 4. A container comprising two upright receptacles, and joined to each receptacle atv the mouth thereof, said casing inclosing both receptacles and being separated a uniform distance from the bodies thereof by a vacuum lspace and by heat insulating devices.

5. Thel combination with a casing, of a hollow walled Jheat insulated container in said casing having a reinforcing and. protecting means permanently -united 4with the outer wall thereof and spacing said con-I tainer from the inside of said casing, Whereby an air space is provided between said container and casing.

a single casing therefor and- Leanser 6. A double-walled glass vessel comprising Y an outer wall havingtwo upwardly extending limbs and a narrow mouthed receptacle and a wide mouth receptacle `fitting 1n the limbs of said wall and secured thereto.

` 7. A' double walled glass vessel comprising a receptacle having a mouth aswide as the body of said receptacle, a second receptacle having a mouth smaller in diameter than the diameter of the body of said second receptacle, said receptacles being arranged parallel to each other and upright, and a single inclosing wall therefor and secured thereto. Y

8. lin a vacuum bottle, the combination. of

an outer wall having a projection `en the interior thereof, a lnotched plate resting on said projection, a heat insulating ring resting on said plate, and a receptacle member secured to said wall land having a part' spaced from said wall and held in position by said ring. i

9. In a vacuum bottle, the combination of .an outer wall having a beaded portion on the interior thereof, a centering and supporting device resting on said beaded portion,

said Vdevice comprising:Z a metal member and a heat insulating member connected together, Vand a receptacle member s aced from said wall and adapted to be held 1n position by said device.

10.A A heat insulating device for doublewalled vessels comprising a disk of heat insulating material having an opening therein, and resilient meanssurrounding the axis of said opening. j

11. A double walled container comprising an inner receptacle member, anouter wall member joined to said inner member, and separate' metal devices connected to said members and embedded in the joint between thev latter.

12. In a doubleA walled container, the combination of an -outer blank, a receptacle j' blank in said outer blank, united therewith and having the body thereof spaced from said outer blank, the surface of one of said blanks having a bead thereon projecting into ,the -space between said blanks, anda heat insulating device between said blanks comlll all

titl

associated therewith, one of said members being provided with notches along its peripheral edge for the purpose set fortli 14k. A heat insulating device for double-M walled vessels comprislng a concentrically .recessed member` of heat insulating material and a resilient member embedded therein and extending `around the axis of the recess of said recessed member. .f

l5. A double-walled container comprising an inner blank constitutinga receptacle, an outer blank constituting the inclosing wall of said receptacle, said outer blank being joined to the inner blank at `the neck thereof and separated therefrom below said joint by a space, and means for reinforcing said joint. v

16. A double-walled glass container comprising an inner glass blank, an outer glass blank joined to the inner blank at the neck thereof and separated therefrom below said joint by a space, said outer blank completelyr inclosing the innery blank and resilient means for reinforcing said joint.

17. A double-walled vacuum insulated container comprising an inner blank, an outer blank joined to the inner blank at the neck thereof and separatedtherefrom below said joint by a vacuum space, said outer blank completely surrounding the body of the inner blank and means embedded in the joint for reinforcing the same. 18. A double walled heat insulated container comprising an inner blank having a body and a neck andconstituting a receptacle, an outer blank having a body and a neck completely inclosing the inner blank, said blanks having the bodies and` necks thereof spaced apart and means for connecting said blanks comprising 'a member secured in the necks of said blanks and extending from within the neck of the inner blank into the neck of the outer blank.

19. A double-walled vacuum insulated container comprising an inner blank, an outer blank joined to the innerV blank at the neck thereof and separated therefrom below said joint by a vacuum space, said outer blank completely inclosing the inner blank, and metal wires embedded in thejoint and extending from the inner blank to the outer blank to reinforce the joint therebetween'.

20. A double-walled container having two receptacle members, a wall inclosing` said receptacle members and joined thereto, and a reinforcement means for the joints between said receptacles and the wall.'

21. A double-walled container comprising an inner receptacle blank and an-outer blank surrounding the receptacle blank, and a joint between the two blanks comprising a resilient U-shaped metal member united to each of the blanks.

A 22. A double-walled vessel comprising an `inner receptacle member, land an inclosing outer wall secured to said receptacle at its mouth and otherwise separated from said inner member, and a reinforcement permanently secured to the outer wall. Y

23. Al double-walled vessel comprising an.

vinner receptacle member, and an outer wall secured to .said receptacle at its mouth and otherwise separated from said inner member, and a resilient reinforcing and protective means permanently attached to the outside surface of said outer wall.'

` 24. A double-walled vessel comprising an inner `receptacle member, and an outer wall secured to said receptacle at its mouth and l otherwise separated from said inner member, and a resilient metal device permanently united with the outer wall and extending around the sides and bottom thereof.

25. vA double walled vacuum insulated ves- `vel having a reinforcing andl protecting frame permanently secured thereto, said frame being composed of resilient wires or bands. v Y Y 2 6. A double-walled vacuum insulated ves.- sel comprising an inner blank and an outer blank joined at their mouths, and a frame' partially embedded in the outer blank and comprising sinuous wires or bands of resilient material.

'- 27. A double-walled vacuum insulated vestween said members having spaced notches in its edge, whereby, in assembling, said ring may be slipped past said beads and then by a slight turn may be positioned so that it will be supported in place by said beads.

29. A glass vacuum bottle comprising an inner glass blank, an'pouterglassinclosing blank joined to the inner blank at the neck thereof and separated therefrom below said joint by a vacuum s ace, and reinforcing means of material di erent from glass, said means terminating in the neck portions of said blanks and extending across the joint therebetween.

30. A heat insulating device for adoublewalled container comprising a metalring carrying heat insulating means, said ring having integral lugs bent to hold said heat insulating means in place on said ring, said lugs being punched from the metal along one edge ofthe ring to form notches along thereof and separated therefrom below said joint by a Vacuum space, reinorcing means comprising members having spaces between them andextenjng'from the inner blank to the outer blank across the joint-therebe-A tween. Y

32. A container hayingfan openwork protective iievice only partially embe'dde in the olit'sie wall thereof and comprising wires embedded at intervals in their length in the material of the container; said wires having partsthereof spaced from the wall of saidcontainer.

In testimony whereof l aiiiX my signature in presence of two witnesses.

EUGENE n .ennnnnwnnn Witnesses: `V

vAn L. BRYANT', M. H. BBAKHAGEN, 

